don't get a Goldfish to put in a 10 gallon tank. I suggest BEFORE getting a Goldfish you go and visit the following 2 web-sights.
A Goldfish's minimum amount of livable space is 10 gallons for a moor. 20 gallons is much much easier and 30 gallons is just right for a moor. It may sound crazy and nuts but you really shouldn't place a Goldfish in anything less than a 20 gallon tank.
The following link has the best medicated and every-day food for your Goldie. Lots and lots of vegies including de-shelled peas to prevent constipation is a must as the previous person said. Frozen peas need nuked for a minute to soften them up and the shell normally comes right off. 2 peas per fish is all you need.
Goldfish can live to be 45 years old or possibly older so make sure you think carefully about getting one and way the pros and cons.
the reason that 10g is best fit for goldfish is because they produce so much ammonia in their urine, which could rapidly lead to ammonia toxic in a very small tank or small biological filtration. However, in a planted tank, plant will happily uptake the waste as nutrient, so there is no need to worry when keeping 1 goldfish in 10g with plant.
The only thing you might concern is to make sure you have enough swimming room for goldfish to swim since they are very an active swimmer.
goldfish get big. Dont put one in a 10!!
Originally Posted by NeverEndingNinja
Stagius, he said its going to be a bare bottom tank. That means it could not have many plants in it.
I agree with the other posters. Keeping a goldfish in a 10gal is just wrong. Its like keeping a betta in a cup.
Thanks for your concerns for the goldfish!
I didn't buy the black moor because it was more expensive than I thought ($10 retail). I ended up with a standard "goldfish", I don't know what variety it is. It's double tailed, has orange body and white fins.
As for the 10g dilemna, I don't think it's a major concern right now because the goldfish is still quite small (1.5"). As it gets bigger I'll move him to bigger tanks. I know goldfish need more water volume, but 10g for 1 small goldfish at the moment is not too bad. Like all stocking levels, it depends on the # of water changes you do and plant density. 10g / goldfish is more for non-planted tanks. The more important issue is swimming space. It's completely bare right now other than floating plants, so it has a lot of room to swim.
The goldfish is very active, yes, but at the same time swims quite slowly (compared to most fish) and it has all the space to move around without decor.
The tank is bare bottom, so no rooted tanks. However, there is a lot of duckweed and cardamine covering the top, does this make up for the lack of "plants"?
Edit: I am not sure about this "constipation", is it true or not?
Also, I will take a picture to show just how much duckweed there is lol.